To provide a silicone oil emulsion that can improve the properties of cosmetic materials and that contains crosslinked silicone particles in water-dispersed silicone oil droplets; a method of producing this silicone oil emulsion; and a silicone oil composition thereof. This invention is a silicone oil emulsion comprising crosslinked silicone particles having an average particle size of 0.05 to 100 μm in silicone oil droplets that are dispersed in water and that have an average particle size of 0.1 to 500 μm wherein the silicone oil is an alkyl-modified silicone oil that has a silicon-bonded alkyl group having at least 4 carbons and the crosslinked silicone particles preferably have a silicon-bonded alkyl group having at least 4 carbons. Also, a silicone oil composition as provided by removing the water from this silicone oil emulsion.